if (isset($entry['cmEthernetTrafficPortMediaType']) && $entry['cmEthernetTrafficPortMediaType'] == 'fiber') {
        //Discover receivn power level
        $oidRx = '.1.3.6.1.4.1.2544.1.12.5.1.21.1.34.' . $index . '.3';
        $oidTx = '.1.3.6.1.4.1.2544.1.12.5.1.21.1.33.' . $index . '.3';
        $currentRx = $pre_cache['adva_fsp150_perfs'][$index . '.3']['cmEthernetTrafficPortStatsOPR'];